I don't think they need another star in their line up ...
you are wrong if you think Derrick Rose is still a star.

he is no star anymore, if he'll ever play with the Lakers, he'll be in the 2nd unit, and my definition of a star belongs to the starter of a team.
Agreed! I don't know why they didn't win Kemba Walker to be on their team, since he's the only legit PG that could fit to the Lakers roster.
I have read the Lakers were desperately looking for a back up PG at some point and willing to include Kuzma on the deal, but I feel like there will be no trade that'll happen for the Lakers roster now?